# Call service data number

**URL:** <https://discourse.nodered.org/t/call-service-data-number/71772>\
**Category:** General\
**Created:** [6 December 2022 14:49 UTC](https://discourse.nodered.org/t/call-service-data-number/71772 "2022-12-06T14:49:43Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![dowermyr](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dowermyr/32/31547_2.png) [@dowermyr](https://discourse.nodered.org/u/dowermyr)\
**Post date:** [6 December 2022 14:49 UTC](https://discourse.nodered.org/t/call-service-data-number/71772/1 "2022-12-06T14:49:44Z")

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Hi!  
How do I set the payload to a data value number? Se below:  
 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/2/1/2158a1e2b6dd320f9869f17ed70dbed36b014f40.png)

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/3/8/388a68342f7fa524b836843dcd9da4da44b18707.png)

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**Author:** ![marcus-j-davies](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/marcus-j-davies/32/103435_2.png) [@marcus-j-davies](https://discourse.nodered.org/u/marcus-j-davies)\
**Post date:** [6 December 2022 15:16 UTC](https://discourse.nodered.org/t/call-service-data-number/71772/2 "2022-12-06T15:16:38Z")

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Hi @dowermyr

Not many HA users here, but I'll try my best.

- if the value is always the same  
-\> set the `Data` field to desired number

- if the value is coming from an `msg` object and its already a number  
-\> set the `Data` field to that object Ex : `payload`

- if the value is coming from an `msg` object and its NOT already a number  
-\> set the `Data` field to `$number(payload)`

I don't use HA, therefore this node, but others may chip in, if I am incorrect

EDIT:  
You can use `$number(payload)` regardless to be honest, as if its already a number, it will not convert it

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [4 February 2023 15:17 UTC](https://discourse.nodered.org/t/call-service-data-number/71772/3 "2023-02-04T15:17:01Z")

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